Novel hot runner mold

Abstract

The utility model discloses a novel hot runner mold and relates to the technical field of hot runner molds. The die comprises a lower die base, guide columns are fixedly connected to the four corners of the top of the lower die base, a top base is horizontally and fixedly connected to the upper ends of the four guide columns, an electric-hydraulic push rod is fixedly installed at the top of the top base, the guide columns below the top base are sleeved with an upper die base in a sliding mode, and the telescopic end of the electric-hydraulic push rod is fixedly connected with the top of the upper die base. Through the arrangement of the demolding frame, when the upper mold base resets upwards, the demolding frame can be driven to move upwards through the elastic force action of the spring, so that an injection molding part in a mold cavity in the lower mold base can be automatically ejected out, personnel can conveniently demold the injection molding part, heat in the mold cavity of the lower mold base can be conducted out through the heat conduction fins, and the heat conduction efficiency is improved. And rapid ventilation in the heat dissipation channel can be achieved through rotation of the suction fan, so that heat on the surfaces of the heat conduction fins can be brought out, and cooling forming of the injection molding part is accelerated.

Description

Technical Field

[0001] The utility model belongs to the technical field of hot runner molds, and particularly relates to a new type of hot runner mold. Background Technique

[0002] The hot runner system ensures that the plastic in the runner and the gate remains in a molten state by heating. The hot runner system has the characteristics of short molding cycle of parts, no production waste materials, few production waste products, and high product quality. Therefore, it is widely used. In the hot runner system, the hot runner mold is one of the essential workpieces. A hot runner mold refers to a mold that uses a heating device to keep the melt in the runner from solidifying all the time. After retrieval, the patent with the application number 202020532958.6 discloses a new type of hot runner mold that can be rapidly prototyped, specifically relating to the technical field of hot runner molds, including a lower mold and an upper mold. A fixed plate is fixedly arranged at the top end of the lower mold, and a limiting mechanism is formed between the lower mold and the fixed plate; the limiting mechanism includes four first limiting columns, second limiting columns are fixedly arranged on both sides of the four first limiting columns, grooves are formed inside multiple second limiting columns, two springs are fixedly arranged inside multiple grooves, fixing blocks are arranged inside multiple grooves, four first limiting holes are formed at the top end of the lower mold, multiple second limiting holes are formed at the top end of the lower mold, and fixing grooves are formed on both sides of multiple second limiting holes.

[0003] However, during the actual use process, the applicant found that after the injection molding is completed, due to the lack of an auxiliary demolding structure, it is not convenient for personnel to quickly take out the cooled and formed injection molded parts from the mold cavity. In view of this, we propose a new type of hot runner mold. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0005] The utility model is a new type of hot runner mold, including a lower mold base. Guide columns are fixedly connected to the four corner positions at the top of the lower mold base. The upper ends of the four guide columns are horizontally fixedly connected to a top seat. An electro-hydraulic push rod is fixedly arranged on the top of the top seat. An upper mold base is slidably sleeved on the guide columns below the top seat. The telescopic end of the electro-hydraulic push rod is fixedly connected to the top of the upper mold base. A control switch is fixedly arranged on one side of the lower mold base. A demolding frame is movably arranged between the lower mold base and the upper mold base. An avoidance groove matched with the demolding frame is formed on the lower mold base below the demolding frame. Guide sliding rods are fixedly connected to the bottoms of both ends of the demolding frame. The lower ends of the guide sliding rods movably penetrate through the limiting blocks fixed on both sides of the lower mold base and are provided with limiting plates. Springs are sleeved on the guide sliding rods between the demolding frame and the limiting blocks.

[0006] Preferably, heat-conducting fins are fixedly arranged side by side at equal intervals inside the lower die base, and the heat-conducting fins are located directly below the upper die cavity of the lower die base.

[0007] Preferably, an air inlet window is formed on the front side of the lower die base, an air suction hood is fixedly connected to the rear side of the lower die base, an air suction fan is fixedly installed at the air outlet of the air suction hood, and the air suction fan is electrically connected to a control switch through a wire.

[0008] Preferably, the air inlet window and the air suction hood are communicated through a heat dissipation channel formed inside the lower die base, the heat-conducting fins are arranged in the heat dissipation channel, and the heat-conducting fins are parallel to the ventilation direction of the heat dissipation channel.

[0009] Preferably, the control switch is electrically connected to an external power supply through a wire, and the electro-hydraulic push rod and the heating element at the hot runner inside the upper die base are respectively electrically connected to the control switch through wires.

[0010] Preferably, the upper end of the spring abuts against the bottom of the demolding frame, and the lower end of the spring abuts against the top of the limit block.

[0011] The utility model has the following beneficial effects:

[0012] The utility model relates to a novel hot runner mold. By arranging the demolding frame, when the upper die base resets upward, the demolding frame can be driven to move upward by the elastic force of the spring, so that the injection molded part in the die cavity inside the lower die base can be automatically ejected, which is convenient for personnel to demold the injection molded part. The heat-conducting fins can conduct out the heat inside the die cavity of the lower die base, and the rapid ventilation inside the heat dissipation channel can be realized by the rotation of the air suction fan, so that the heat on the surface of the heat-conducting fins can be taken out, the cooling and forming of the injection molded part can be accelerated, and the injection molding efficiency of the mold can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a top view structural schematic diagram of a novel hot runner mold of the present utility model;

[0015] Figure 2 It is a bottom view structural schematic diagram of a novel hot runner mold of the present utility model;

[0016] Figure 3 It is a rear view structural schematic diagram of a novel hot runner mold of the present utility model.

[0017] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0018] 1. Lower die base; 2. Guide post; 3. Upper die base; 4. Top seat; 5. Electro-hydraulic push rod; 6. Demolding frame; 7. Spring; 8. Guide slide bar; 81. Limit plate; 9. Limit block; 10. Air inlet window; 11. Heat conducting fin; 12. Avoidance groove; 13. Control switch; 14. Suction hood; 15. Suction fan. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-3 As shown, the present invention provides a technical solution:

[0021] Embodiment 1: A new type of hot runner mold, including a lower mold base 1. Guide columns 2 are fixedly connected to the four corner positions at the top of the lower mold base 1. The upper ends of the four guide columns 2 are horizontally and fixedly connected to a top seat 4. An electro-hydraulic push rod 5 is fixedly installed on the top of the top seat 4. An upper mold base 3 is slidably sleeved on the guide columns 2 below the top seat 4. The telescopic end of the electro-hydraulic push rod 5 is fixedly connected to the top of the upper mold base 3. A control switch 13 is fixedly installed on one side of the lower mold base 1. The control switch 13 is electrically connected to an external power supply through a wire. The electro-hydraulic push rod 5 and the heating elements at the hot runner inside the upper mold base 3 are respectively electrically connected to the control switch 13 through wires. A demolding frame 6 is movably arranged between the lower mold base 1 and the upper mold base 3. An avoidance groove 12 matching the demolding frame 6 is opened on the lower mold base 1 below the demolding frame 6. Guide sliding rods 8 are fixedly connected to the bottoms of both ends of the demolding frame 6. The lower ends of the guide sliding rods 8 movably penetrate through the limiting blocks 9 fixed on both sides of the lower mold base 1 and are provided with limiting plates 81. A spring 7 is sleeved on the guide sliding rods 8 between the demolding frame 6 and the limiting blocks 9. By arranging the demolding frame 6, when the upper mold base 3 moves upward and resets, under the elastic force of the spring 7, the demolding frame 6 can be driven to move upward, so that the injection molded part in the mold cavity inside the lower mold base 1 can be automatically ejected, facilitating the demolding of the injection molded part by personnel. The upper end of the spring 7 abuts against the bottom of the demolding frame 6, and the lower end of the spring 7 abuts against the top of the limiting block 9. During use, the electro-hydraulic push rod 5 drives the upper mold base 3 to move downward, so that the upper mold base 3 moves downward along the guide columns 2 and cooperates with the lower mold base 1. At this time, the demolding frame 6 can be pressed downward into the avoidance groove 12 by the upper mold base 3, so that the demolding frame 6 moves downward to compress the spring 7. Then, the molten material can be injected into the mold cavity of the lower mold base 1 through the hot runner through the injection port at the top of the upper mold base 3 for injection molding. After the injection molding is completed, the electro-hydraulic push rod 5 drives the upper mold base 3 to move upward and reset. At this time, under the elastic force of the spring 7, the demolding frame 6 can be driven to move upward, and the injection molded part inside the mold cavity can be lifted by the demolding frame 6 to realize the automatic demolding of the injection molded part.

[0022] Embodiment 2: The difference between this embodiment and embodiment 1 is that, heat-conducting fins 11 are fixedly arranged side by side at equal intervals inside the lower mold base 1, and the heat-conducting fins 11 are located directly below the concave mold groove on the lower mold base 1. An air inlet window 10 is opened on the front side of the lower mold base 1, and an air suction hood 14 is fixedly connected to the rear side of the lower mold base 1. A suction fan 15 is fixedly installed at the air outlet of the suction hood 14, and the suction fan 15 is electrically connected to the control switch 13 through a wire. The air inlet window 10 and the suction hood 14 are connected through a heat dissipation channel opened inside the lower mold base 1, and the heat inside the mold cavity of the lower mold base 1 can be exported through the heat-conducting fins 11, and can be The suction fan 15 rotates to achieve rapid ventilation inside the heat dissipation channel, thereby taking out the heat on the surface of the thermal fins 11, accelerating the cooling and molding of the injection molded parts, and further improving the injection molding efficiency of the mold. The thermal fins 11 are arranged in the heat dissipation channel, and the thermal fins 11 are parallel to the ventilation direction of the heat dissipation channel. When the injection molded parts are cooled, the heat inside the mold cavity can be conducted to the thermal fins 11. At this time, the suction fan 15 can be powered on and rotated. The rotation of the suction fan 15 can drive the rapid ventilation of the heat dissipation channel inside the lower mold base 1, and take out the heat on the surface of the thermal fins 11, thereby accelerating the cooling and molding of the injection molded parts.

[0023] Working principle: When in use, the upper mold base 3 is driven downward by the electro-hydraulic push rod 5, so that the upper mold base 3 moves downward along the guide column 2 and cooperates with the lower mold base 1. At this time, the demolding frame 6 can be pressed downward into the avoidance groove 12 through the upper mold base 3, so that the demolding frame 6 moves downward to compress the spring 7. Then, the molten material can be injected into the mold cavity of the lower mold base 1 through the injection port at the top of the upper mold base 3 through the hot runner for injection molding. After the injection molding is completed, the upper mold base 3 is driven to reset upward by the electro-hydraulic push rod 5 Move, at this time, under the elastic force of the spring 7, the demolding frame 6 can be driven to move upward, and the injection molded part inside the mold cavity can be lifted up by the demolding frame 6, so as to realize automatic demolding of the injection molded part. When the injection molded part is cooled down, the heat inside the mold cavity can be conducted to the heat-conducting fins 11. At this time, the suction fan 15 can be powered on and rotated. The rotation of the suction fan 15 can drive the rapid ventilation of the heat dissipation channel inside the lower mold base 1, and bring out the heat on the surface of the heat-conducting fins 11, thereby accelerating the cooling and molding of the injection molded part.

[0024] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0025] The above are only the preferred embodiments of the present utility model and do not limit the present utility model. Any modification to the technical solutions recorded in the foregoing embodiments and any equivalent replacement of some technical features thereof all fall within the protection scope of the present utility model.

Claims

1. A new hot runner mold, comprising a lower mold base (1), characterized in that: The four corner positions on the top of the lower die base (1) are fixedly connected to guide columns (2), the upper ends of the four guide columns (2) are horizontally fixedly connected to a top base (4), an electro-hydraulic push rod (5) is fixedly installed on the top of the top base (4), an upper die base (3) is slidably sleeved on the guide columns (2) below the top base (4), the telescopic end of the electro-hydraulic push rod (5) is fixedly connected to the top of the upper die base (3), a control switch (13) is fixedly installed on one side of the lower die base (1), and the lower die base ( A demoulding frame (6) is movably arranged between the upper mold base (1) and the upper mold base (3); a lower mold base (1) below the demoulding frame (6) is provided with an avoidance groove (12) that cooperates with the demoulding frame (6); the bottoms of both ends of the demoulding frame (6) are fixedly connected with guide slide bars (8); the lower ends of the guide slide bars (8) movably penetrate the limit blocks (9) fixed on both sides of the lower mold base (1) and are provided with limit plates (81); and a spring (7) is sleeved on the guide slide bar (8) between the demoulding frame (6) and the limit blocks (9).

2. A new hot runner mold according to claim 1, characterized in that: Heat-conducting fins (11) are fixedly arranged side by side at equal intervals inside the lower die base (1), and the heat-conducting fins (11) are located directly below the upper die groove of the lower die base (1).

3. A new hot runner mold according to claim 2, characterized in that: An air inlet window (10) is provided on the front side of the lower mold base (1), and an air suction hood (14) is fixedly connected to the rear side of the lower mold base (1). A suction fan (15) is fixedly installed at the air outlet of the suction hood (14), and the suction fan (15) is electrically connected to the control switch (13) via a wire.

4. A new hot runner mold according to claim 3, characterized in that: The air inlet window (10) is connected to the air suction cover (14) via a heat dissipation channel opened inside the lower mold base (1), and the heat conduction fins (11) are arranged in the heat dissipation channel, and the heat conduction fins (11) are parallel to the ventilation direction of the heat dissipation channel.

5. A new hot runner mold according to claim 1, characterized in that: The control switch (13) is electrically connected to an external power source via a wire, and the electro-hydraulic push rod (5) and the heating element at the internal hot runner of the upper mold base (3) are electrically connected to the control switch (13) via a wire.

6. A new hot runner mold according to claim 1, characterized in that: The upper end of the spring (7) abuts against the bottom of the demoulding frame (6), and the lower end of the spring (7) abuts against the top of the limiting block (9).

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